Atari CX User Manual

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Graphic Television Interface Adaptor (GTIX)
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The Graphic Televison Interface Adaptor (GTIA) chip retrieves graphics data from
memory via the ANTIC DMA process.
This data is routed to the GTIA graphics
registers. Figure 1-5 shows the pin assignments for the GTIA.
Address Bus
Address Bus
Ground
Data Bus
Dara Bus
Oata Bus
aata Bus
Trigger 0
Trigger 1
Trigger 2
Trigger 3
Port Select
Port Select
+CAP Control
Not Used
Not Connectad
Color Delay
Alphanum- Data 0
Alphanum. Data 1
Alphanum- Data 2
A1
A%
VSS
03
D2
Dl
Yf.
T1
T2
T3
sff
. S1
s2.
53
..
DEL
AN0
AN 1
AN2
0
GTIA
A2
A3
A4
Dk
D5
06
D7
R/Y
m
LUM o
a2
Fa'0
OSC
VCC
HALr
CSY NC
LUM 3
LUM 2 -
LUt.1 1
COL
Address Bus
Address Bus
Address Bus
Oata Bus
Data Bus
Data 3us
Data Bus
Read/Write
Chip Select 1
Luminance
o Output
Phase 2 Input
Clock Out e
Oscillator Input
Power
HALT q
Output Sync
Luminance 3 Output .
Luminance 2 Output
Luminance I Output
Color
Figure 1-5. GTIA Pin Assignments
POT Keyboard Integrated Circuit (POKEY)
The Pot Keyboard Integrated Circuit (POKEY) chip provides the interface between the '
game ports and the microprocessor. It also contains four semi-independent audio
channels, each with its own frequency, noise, and volume control. Figure
1-6 shows
the pin assignments of
the POKEY.
CX5200 Field Service Manual

Atari CX Specifications

General

Brand	Atari
Model	CX
Category	Home Theater System
Language	English